With a touch the spellcaster splits the target's soul in half, separating his darkest desires, secret hates and evil tendencies into a second personality. This dark twin lurks in the target's mind, coaxing him to commit evil acts and give in to his most hedonistic desires.

Only creatures with Intellects of 5 or higher make valid targets for this spell. Once the caster touches the target, he must make a Will save to resist the sundering; however, the target initially feels no different whether he succeeds or fails on his saving throw. The split soul initially lies dormant, biding its time.

The next day, and every day after that, the split soul attempts to manipulate its host. Once during the 24 hours after the target fails his save, he must make a second Will save (the save DC increases by +1) or feel more inclined to commit evil acts. The target's inhibitions seem loosened and his morals slightly absurd. His alignment shifts one step (either in the Law-Chaos axis or Good-Evil axis) toward chaotic evil (see WoW RPG, Chapter 7: Description, "Alignment"). On a successful save the target feels no different; he does not realize there is anything wrong inside his mind.

Each day thereafter, the target must make another Will save. The DC increases by +1 every time the target attempts a new save. Every failed save weakens the target's moral code a little further and shifts his alignment one step toward chaotic evil.

Of course, the target's friends and family may notice something odd about the target's behavior, but the split soul is cunning and tries to hide itself. The target gains a +5 bonus on Bluff checks when attempting to reassure others that he is the same person he's always been; indeed, he feels just like the same person he's always been. A target in a zone of truth can claim to be unaffected and uninjured by any evil spell; to the best of his knowledge, he's fine.

Detect magic and other such spells reveal nothing unusual about the target, although detect taint always detects the character unless he makes his save. Divination and other such spells might uncover the truth about the target's situation. Dispel magic has no effect on the character, nor does break enchantment. Only a limited wish, greater restoration, miracle or wish restores the character to his old self. Heal or restoration mends the schism in the character's mind but does not reverse any alignment shifts.